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Side by Side Diff: third_party/WebKit/Source/modules/webaudio/PeriodicWave.cpp

Issue 2807673002: createPeriodicWave parameters are sequence<float> (Closed)
Patch Set: Rebase Created 3 years, 8 months ago
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1 /* 1 /*
2 * Copyright (C) 2012 Google Inc. All rights reserved. 2 * Copyright (C) 2012 Google Inc. All rights reserved.
3 * 3 *
4 * Redistribution and use in source and binary forms, with or without 4 * Redistribution and use in source and binary forms, with or without
5 * modification, are permitted provided that the following conditions 5 * modification, are permitted provided that the following conditions
6 * are met: 6 * are met:
7 * 7 *
8 * 1. Redistributions of source code must retain the above copyright 8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer. 9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright 10 * 2. Redistributions in binary form must reproduce the above copyright
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47 47
48 // The max length of a periodic wave. This must be a power of two greater than 48 // The max length of a periodic wave. This must be a power of two greater than
49 // or equal to 2048 and must be supported by the FFT routines. 49 // or equal to 2048 and must be supported by the FFT routines.
50 const unsigned kMaxPeriodicWaveSize = 16384; 50 const unsigned kMaxPeriodicWaveSize = 16384;
51 51
52 const float kCentsPerRange = 1200 / kNumberOfOctaveBands; 52 const float kCentsPerRange = 1200 / kNumberOfOctaveBands;
53 53
54 using namespace VectorMath; 54 using namespace VectorMath;
55 55
56 PeriodicWave* PeriodicWave::Create(BaseAudioContext& context, 56 PeriodicWave* PeriodicWave::Create(BaseAudioContext& context,
57 size_t real_length, 57 const Vector<float>& real,
58 const float* real, 58 const Vector<float>& imag,
59 size_t imag_length, 59 bool disableNormalization,
60 const float* imag,
61 bool disable_normalization,
62 ExceptionState& exception_state) { 60 ExceptionState& exception_state) {
63 DCHECK(IsMainThread()); 61 DCHECK(IsMainThread());
64 62
65 if (context.IsContextClosed()) { 63 if (context.IsContextClosed()) {
66 context.ThrowExceptionForClosedState(exception_state); 64 context.ThrowExceptionForClosedState(exception_state);
67 return nullptr; 65 return nullptr;
68 } 66 }
69 67
70 if (real_length != imag_length) { 68 if (real.size() != imag.size()) {
71 exception_state.ThrowDOMException( 69 exception_state.ThrowDOMException(
72 kIndexSizeError, "length of real array (" + 70 kIndexSizeError, "length of real array (" +
73 String::Number(real_length) + 71 String::Number(real.size()) +
74 ") and length of imaginary array (" + 72 ") and length of imaginary array (" +
75 String::Number(imag_length) + ") must match."); 73 String::Number(imag.size()) + ") must match.");
76 return nullptr; 74 return nullptr;
77 } 75 }
78 76
79 PeriodicWave* periodic_wave = new PeriodicWave(context.sampleRate()); 77 PeriodicWave* periodicWave = new PeriodicWave(context.sampleRate());
80 periodic_wave->CreateBandLimitedTables(real, imag, real_length, 78 periodicWave->CreateBandLimitedTables(real.Data(), imag.Data(), real.size(),
81 disable_normalization); 79 disableNormalization);
82 return periodic_wave; 80 return periodicWave;
83 }
84
85 PeriodicWave* PeriodicWave::Create(BaseAudioContext& context,
86 DOMFloat32Array* real,
87 DOMFloat32Array* imag,
88 bool disable_normalization,
89 ExceptionState& exception_state) {
90 DCHECK(IsMainThread());
91
92 return Create(context, real->length(), real->Data(), imag->length(),
93 imag->Data(), disable_normalization, exception_state);
94 } 81 }
95 82
96 PeriodicWave* PeriodicWave::Create(BaseAudioContext* context, 83 PeriodicWave* PeriodicWave::Create(BaseAudioContext* context,
97 const PeriodicWaveOptions& options, 84 const PeriodicWaveOptions& options,
98 ExceptionState& exception_state) { 85 ExceptionState& exception_state) {
99 bool normalize = options.hasDisableNormalization() 86 bool normalize = options.hasDisableNormalization()
100 ? options.disableNormalization() 87 ? options.disableNormalization()
101 : false; 88 : false;
102 89
103 Vector<float> real_coef; 90 Vector<float> real_coef;
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114 imag_coef = options.imag(); 101 imag_coef = options.imag();
115 real_coef.Resize(imag_coef.size()); 102 real_coef.Resize(imag_coef.size());
116 } else { 103 } else {
117 // Neither |real| nor |imag| given. Return an object that would 104 // Neither |real| nor |imag| given. Return an object that would
118 // generate a sine wave, which means real = [0,0], and imag = [0, 1] 105 // generate a sine wave, which means real = [0,0], and imag = [0, 1]
119 real_coef.Resize(2); 106 real_coef.Resize(2);
120 imag_coef.Resize(2); 107 imag_coef.Resize(2);
121 imag_coef[1] = 1; 108 imag_coef[1] = 1;
122 } 109 }
123 110
124 return Create(*context, real_coef.size(), real_coef.Data(), imag_coef.size(), 111 return Create(*context, real_coef, imag_coef, normalize, exception_state);
125 imag_coef.Data(), normalize, exception_state);
126 } 112 }
127 113
128 PeriodicWave* PeriodicWave::CreateSine(float sample_rate) { 114 PeriodicWave* PeriodicWave::CreateSine(float sample_rate) {
129 PeriodicWave* periodic_wave = new PeriodicWave(sample_rate); 115 PeriodicWave* periodic_wave = new PeriodicWave(sample_rate);
130 periodic_wave->GenerateBasicWaveform(OscillatorHandler::SINE); 116 periodic_wave->GenerateBasicWaveform(OscillatorHandler::SINE);
131 return periodic_wave; 117 return periodic_wave;
132 } 118 }
133 119
134 PeriodicWave* PeriodicWave::CreateSquare(float sample_rate) { 120 PeriodicWave* PeriodicWave::CreateSquare(float sample_rate) {
135 PeriodicWave* periodic_wave = new PeriodicWave(sample_rate); 121 PeriodicWave* periodic_wave = new PeriodicWave(sample_rate);
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397 } 383 }
398 384
399 real_p[n] = 0; 385 real_p[n] = 0;
400 imag_p[n] = b; 386 imag_p[n] = b;
401 } 387 }
402 388
403 CreateBandLimitedTables(real_p, imag_p, half_size, false); 389 CreateBandLimitedTables(real_p, imag_p, half_size, false);
404 } 390 }
405 391
406 } // namespace blink 392 } // namespace blink
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